John Talfryn Thomas (31 October 1922 – 4 November 1982) was a Welsh character actor, best known for supporting roles on television in the 1970s, including those of Private Cheeseman in Dad's Army (1973–1974) and Tom Price in Survivors (1975), while Thomas also appeared with Jon Pertwee in two Doctor Who serials.

During World War II, he joined the Royal Air Force (RAF), and was a rear gunner on a Lancaster bomber, flying on multiple raids into Germany.

After surviving a crash in which all the other crew members were killed, he took up acting partly as therapy to cope with the trauma, before training as an actor in the London Academy of Music and Dramatic Art (LAMDA).

[3] Thomas also appeared with Jon Pertwee in the Doctor Who serials, Spearhead from Space (1970) and The Green Death (1973), and in the Worzel Gummidge episode "The Scarecrow Wedding" (1980).

[9][10] Talfryn Thomas' few films included Sky West and Crooked (1965) starring Hayley Mills, and Andrew Sinclair's adaptation of Dylan Thomas's Under Milk Wood (1972), with Richard Burton, Elizabeth Taylor and Peter O'Toole.